summary_of_thermo

summary_of_thermo - Common state variables P, V, T, n, Cp,...

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Common state variables P, V, T, n, C p , C v , E, H = E+PV, S (dS =dq rev /T), G = H-TS, A = E-TS, μ i = ( G/ n i ) T,P,nj Equations of state : e.g. Ideal gas law 1st law : E = q + w system surroundings Path-dependent variables : dw = -P ex dV; dq = C dT Reversible vs irreversible processes. 2nd law : S sys + S surrondings > 0 for spontaneous processes Most other equations are mathematical consequences of the 1 st and 2 nd laws applied to different situations. You need to know WHY for each case. Examples Constant T, P : G < 0 for spontaneous processes Constant T, V : A < 0 for spontaneous processes 0 =l n GGR TQ ∆∆+ 0 ln GR T K ∆= For a chemical reaction: 00 2 (/ ) P GT H TT ⎛⎞ ∂∆ =− ⎜⎟ ⎝⎠ 0 (1/ ) P K H TR T-dependence
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This note was uploaded on 08/03/2009 for the course BME 100 taught by Professor Yuan during the Spring '07 term at Duke.

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summary_of_thermo - Common state variables P, V, T, n, Cp,...

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